A l‐mgd (3.8‐ML/d) ion exchange plant was built in McFarland, Calif., to remove excess concentrations of nitrate from one of the city's supply wells. Data are reported for the semiautomatic mode of operation, during which time the plant has performed satisfactorily. Nitrate has been reduced to less than 10 mg as nitrogen/L and brine has been eliminated from the product water.
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Lauch et al. (1986) studied this question.